Line-lock and margin-stop mechanism.



G. SPIRO. LINE LOCK AND MARGIN sToP MBGHANISM.

APPLIOATION FIL'ED 11mm, 1910.

987,765. Patented 11211.28, 1911.

C. SPIRO. LINE LOCK AND MARGIN S'IOP MBUHANISM.

` APPLICATION I'ILED AUG. 4, 1910.

Patented Mar. 28, 1911.

Z SHBETS-SHEET 2.

lTo all whom vltmafy concern:

cHAnLns srrno, or NEW YORK, N.- Y.

LINE-LOCK AND MARGIN-STOP MECHANISM.

names.

'i Specification ofLettersPatent.

ppucationmed August 4, 1910. serial No. 575,524.

Be it known that I, CHARLES Srmo, a citi- Azen-of the United States,vresiding at New York, county of New York, State of New i York, haveinvented certain new and useful -Improvements 1nv Line-Lock andlVlargin- Stop Mechanism, ofv which the following is a Specification,reference being had therein to the accompanying drawing.

The invention disclosed in this application lrelates broadly totypewriting machines and specifically' to. line lockand margin .stopmechanisms for a typewriter carriage.

The principal vobject of this invention is to construct a margin ,stopand line lock. vmechanism for a front strike typewriting machine inwhich the stop actuators are located to the rear of the paper table, andare so positioned 'as to be easily and quickly ad.- justable from thefront of the machine.

Another object of this invention is to construct a line lock and marginstop kmechanism for a typewriting machine wherein both the margin stopand line lock devices are released by means of a single release keylevert.

Another object of this invention isto construot'a line loek? mechanismfor a typewriting machine which a'lock stop isv swung into the path of aswinging stop in order to lock the printing, eseapement, and

'ribbon mechanisms when the carriage has reached a pre-determined pointin its travel;

the positioning of said -stopsbeing eHected by means of a latch cammounted upon a movable carriage.

Another object of this inventionuis to vcon-v struct a line lockmechanism for the carriage of a typewriter in suchmannerthat the'locking parts are adapted to be unlocked bydepressionu on a release keywhich moves the parts 1n the 'same direction as the y -arts were movedto be ,thrown into locking position. l

Afurtherobject of this invention is to construct a line lock mechanismfor a typewriting machine. in whicha movable actuating .cam 'member iscarried upon the line lock actuator. in the path of mechanisms adaptedto position the stops when the carriage has reached a pre-determinedpoint Ain its travel. i y

Still' otherlan further objects 'of this invention will vin part beobvious and will in part be'vpointed out hereinafter in thespeciiication bygreference to the accompanying drawings in which likenumerals are used to indicate' like parts throughout the severalfigures, and thescope of the invention will be indicated by theappended-claims.

Figure 1 is a view showing a typewrit-ing machine in sectionalelevation. Fig. 2 is a view showing the line lock mechanism inelevational detail. Fig. 3 is a view showing the line lock mechanism indetail in front elevaticn. l Fig. 4 is a plan view of one of the linelock stops. Fig. 5 is a detail view of the movable latch member.

Patented Mar. 28, 1911..

Referring particularly to Fig. 1, it will be noted that'several parts ofa typewriter are disclosed in this view which do not relate specificallyto line 1'ick or margin stop mechanism, and therefore, these particularparts will only be described in a .general way. However, the particularmechanisms which do not form a part of the-specific combination ofelements in the margin stop and line lock mechanisms, are covered byvapplica* tions for patent co-pending with this application.

Referring specifically to Fig. 1, the ma' chine frame comprises sideportions 1, which are connected by means of a front bar 2, at thefrontof the machine, and by means of a rear bar 4, at the rear of the,machine Upright posts 5 and 6, are formed integral with the sidemembers 1, and are adapted to carry a top plate 7, which is liXedlymounted upon the upper ends of the supporting posts 5 and 6, by means ofany well known method for interlocking metallic arts. A front board 8,iscarried in the Jfgont portion of the machine between the supportingposts 5, and is adapted to protect type heads 9, that are mounted upontype bars-10. The type bars 10 arev pivotally mounted in a type barhanger segment 11, and are operatively connected with key levers 12,which terminate in the forward portion of the machine in key cap members14. The top plate 7, is adapted to carry ribbon spools 15 and actuatingmechanisinsl therefor,.which are o eratively connected with a universalbar 1P?, in such manner as to be actuated each time a printing key 14 isdepressed in the key board. The top plate 7 is also adapted to support acarriage bed 18, upon which is reciprocally mounted a carriage frame 19,by means of anti-friction balls 20. A swinging platencarriage 21, ismounted within the carriage frame 19, andis adapted `to .carry acylindrical platen 22. Line'spacing mechv 'the cylindrical platen 22..llPlaten 4:shifting anisml 24,` isv mounted u on .the lcarriage frame 19,and lsoperativ'ey connected with mechanisms 2 5 jare arranged 'in suchmanner as to enable the cylindricalplaten to be shifted from one,',printing level to another at the will of the'ope'rator. .v

It is believed t-hatthegeneral description hereinbefore'given issufficient `for an understanding of 'the relationship ofthe severalIparts of the typewriting machine in assembled relation, and thedescription h'asbeen given' for the reasonthatlall of. the partsl of thetypewriting machinefare necessarily more or. less interrelated in theirconstruction and operation, however, the remainder. 4`of thespecification lwill be devoted spe'- ciiically v to description ofmargin stop land line lock mechanisms. p

Referring more specifically toFigs. 2 and 3 of the drawings, .a 'marginstop carrier 26 and a line lock actuator 27 are plvotally and slidablymounted upon a rod 28 which forms the pivotal supporting rod for ltheswinging platen carriage21, and are provided, with which extend in anupward 'direction sub-v.

stantially back of and beneath-apaper tas ble 37, in such manner'thatwhen the'ifinge'r pieces 35 or 36, are pulledl towardthe .front of themachinethe toothed faces 32 are disengaged from the rack 34and either ofthe right.

members 26 or 27, may be moved longitudinally of the rod 28 andpositioned: thereupon at any point which the operator may choose. Themargin sto carrier 26, which is located upon the rig t of the carriageframe, terminates rin a downwardlyv depending portion which carrilesastop 38. As the platen carriage is returned from left to right to begina new line, the stop 38 is moved from left to right until it comes intoengagement with a swinging stop member 39, which" is pivotally mountedupon a stud screw 40 upon the top plate of the machine frame, and isresiliently heldin the ath of the adjustable stop 38, by means o asmallcoiled spring 41, which is mounted upon the stud screw 40. The engaement of the adjustable 'stop 38 with tie swinging sto 39, merelydetermines the distanceI to whic the carriage of the machine can' bemoved to the In other words, it determines the wldth of the'margin atthel left of the typewritten page and doesnot lock any yof the yfrom.right to left, and forf't actuating'vparts of the typcWrit-ing machine,for the reason that it is desirable to print a letter or character whenthe stops 38 and 39 arein engagement with each other. ever, it is sometimes: desirable thatthe carria'ge mechanism may be *moved a distancermember *42,-is' mountedinthe lmachine frame u lnon a stud 'screw 44andis ,formed with 'an o lie the tail portion ofthe-.swinging sto 39. Thelupper end ofthe vpivotedfc'cpmtro ling member 42, terminates in a linelock actuating member 46, whichfcoperates with the line lock mechanismsto .l be described hereinafter. The 'tail portion 47 ofthe pivoted''controlling member 42, vis ,adapted to-,be re ceived -wlthin 'abifurcated portion 48,

formed upon the 'unperendjof a ybell crank member 49, which 1s lixedlymounted upon .a rocking shaft 50,'that is pivoted within the machineframe. A wire spring 51, is iixedly set member 45, which is adapted to'undermounted upon thebell crank member 49, and

engages with the pivovted controllingmember, 42, in such manner Aa's'tomaintain the moyable parts'42 and 49, in lnormal position.. A bell crankstop carrying member 52, vis lixedly mounted upon theopposite end of therocking shaft 50, andthe arm 54 of the bell crank1 member'52, -is'operatively coniiected by means of a connecting link 55, toV arelease-key lever 56, which is pivotally mounted in the machine 'frameas'at 57, andv extending forwardly terminates in akey cap 58, which isadapted to occupy a position in a plane above the key caps 14 in the keyboard.I Asmall coiled spring 59, attached to the. release key lever 56and to the type bar segment 11, in such manner'as to normally maintainthe key lever in proper position. The link member 55, is constructedwith its upper end provided with a slot 60, in order' that the releasekey lever 56, will not be actuated by the carriage when the line lockmechanism, hereinafter to be described, is set by movement of thecarriage. After the margin release 'stops 38 and 39 have been releasedin order to permit the carriage to move beyond them in its travel towardthe left, it becomes necessary that the parts shall be so constructed asnot to be rengaged to lock the carriage Awhen the carriage is movingunder themfluence of the escapement mechanism andfcarriage spring drumin its normal-letter s ace movement hisknurnose the carries a pivotallymounted cam dog 62, that isprovided with a beveled camface 64,

which is normally held in a forward position by means ofv a small coiledspring 65,

, asis clearly shown in Fig. 5. As the carriage mechanism is movedfrom'right ,to left under the influence of the carriage spring drum, andcontrolled by the escapement mechanism, the-swinging cam dog 62 comesinto engagement `with a beveled face 66,

. which is formed upon the line' lock actuating member 46, formedintegral with the lock controlling member 42: The co-a'ction of the camface 64 with the beveled face 66,

is such as to swing" the member 42Vupon its pivot,`and turnsthe rockingshaft 50,' by

means of the bell crank member 49, thus swinging the bell lcrank stopcarrying member 52, and positioning the line lock stop 67 in the-path ofan oscillatingstop 68, which is carried bythe universal bar 17. When theline lock stop 67, is in the path ofQthe oscillating stop l68, theuniversal bar 17 canv not be actuated, and therefore the Whole of the.operation'of the typevvriting machine i which lhas todo with the.printing operation,

is locked against actuation-and it becomes impossible tc'depress theprinting key l2 in order to actuate the type 'bar l0 orto causeescapement action of the carriage, the reason for this being that lwhenthe end of a line is reached, it is desirable that the operator shall benotified thereof to preventrunning from oil' the paper and spoiling thcright hand margin of' the-typewritten page,

and after thecarriage has ceased to move it becomes necessary thattheprinting mechay nism shall be locked in order that Vletters will not beprinted one-upon the other before the operator is aware of the stoppageof the carriage. However, it frequently is' desirable that a letter ortwo may be added to com-v plete a Word or that a hyphen may be insertedto indicate a Word is completed uponthe next line.

In order-to permit further movement of the carriage from right to left,

l it is nccessarythat the locking parts shall be disengaged, and it willbe seen that if ythe key cap 58 of the release key lever 50is depressed,

the bell crank stop carrying member 52 Will be oscillated byl means ofthe carrying link 55, to swing 'the line lock stop 67 forward in lmember. 49, the,pivotedvcontrolling member.

v(38. crankl stop carrying member oscillatesthe same directionthat itwas moved to locking position in the path of theoscillating stop Theswinging movement of the bell rocking shaft 50, and swinging the bellcrank 42ste also swung aV suiiicient distance to permit the. line lockactuating member 46, to

swing out `of the path of the cam dog 62,

Which'is immediately restored to normal position by means of "t e-coiled spring 65, and upon releasing pressure on the key cap 68,

the several parts ofthe line lock mechanism will return to normalposition Within the line lock stop 67, and 'will lie in a cut-awayportion 69, of the` oscillating stop 68, and the printing mechanisms ofthe'typeWriti-ng machine are unlocked and free to actuate in the i usualnormal manner.

In the construction which has hereinbefore vbeen described, it will benoted that both the margin stops and the line lock mechanisms are'adapted to he. released by the same release key,l and that y,thereleasing operation -does not affect or swing any of the partsVcontrolled by the moving carriage,

with the exception ofthe small cam dog 62, and furthermore, that-.nreleasing the line lock mechanisms, .the releasing operation carries theline lock mechanisms forward in the same direction which they arepositioned l fI desire to claim is 1,-

,1. In a margin stop mechanism fortype- Writing machines incombination,a'macliine frame, a platen carriage mounted. for reciprocalmovement upon said machine frame, anadjustable `mangia stop carried bysaid carriage mechanism, av pivoted stop mounted in said machine frame,and releasing means for'actuating said pivoted'stop, said releasingmeansl mcludinga pivoted actuating member, -a ,releasekeylileveif;'-pivotally mounted in said machiiieframe, a rocking shaftoperatively connected with said pivoted key lever, and operative meansconnecting said rocking shaft and said pivoted stop4 member.l t

2. In a margin stop mechanism for type- Writing machines in combination,`a machine frame,a platen carriage mounted for reciprocal movement uponsaid machine frame, a margin stopv adjustably:mounted` said. platencarrlage,` a pivoted stop'. mounted in said machine frame, and means-forreleasing n y said pivoted stop from engagement with said margin stop,said releasing means comprising a pivotedactuating member.- a releasingkey lever pivctally mounted in said machine frame, a rocking shaft,means for operatively connecting said rocking `shaft 'with said pivotedlever, a pivotcd controlling member, yand means operativel)T connectedwith said rocking shaft and adapted vto coperate with-saidvpivotedcontrolling member. c A

3. margin stop mechanism for type- :Writinglmachines including amainframe, a 'carriage vmounted vfor reciprocal movement upon said mainframe, a pivotal rod 'mounted 1n said carriage, a cross rod also mounted1n said carriage, a 'margin stop mounted for vrotatable and longitudinalmovement upon 'said pivoted rod, a leaf spring carried byv otedcontrolling lever, a line lock stop carried by 'said rocking shaft, auniversal bar,

and an oscillating stop carried bysaid.universal bar.

5. A line lock mechanism for typewriting vmachinescomprising a machineframe, a

platen carriagev mounted for reciprocal movement upon said machineframe, a line lock actuator adjus'tably mounted in said carriage, acontrolling member, and means carried by said.l lineL lock actuator andadapted to operate said controlling member,

al rockingI shaft, means' o eratively connecting said rocking shaftwith' said controlling member, a lineV lockstofcarried by said rockingshaft, a universa bar, and an oscillating sto operativelyonnected withsaid universal ar.

6. A line lockmechanism for typewriting machines comprising. a machineframe, a

. platen carriage mounted for reciprocal movement in said machine frame,a line lock actuator adjustably mounted in said platen carriage, a sprinT controlled cam member pivotally mounted on said actuator, a cam face,controlling member pivotally mounted in said machine frame and normallyhaving said cam face in the path `of said pivoted cam, a universal bar,an oscillating stop carried by said universaly bar, a line lock stopadapted to be positioned in the path of said oscillating stop, and meansfor operatively connecting said controllingmember with said line lockstop.

7. A line. lock mechanism for typewriting machines comprising a machineframe, a carriage mounted for reciprocal movement upon said machineframe, a line lock actuator adjustably mounted in said carriage, acontrolling member mounted in such manner as to be movable transverselyto the movemcnttnof said carriage, a univetsal bar, an osciliating s topoperatively connected with said universal bar,"a line lock stop, and

means operatively connectingsaid line lockstop with said controllingmember in suchmanner that said line'lock stop ispositioned in the pathof said oscillating stop When the carriage has reachedpa pre-determinedpoint in its travel. 7

8. A line lock mechanism for typewriting ymachines comprising a machineframe, a.` carriage mounted for reciprocal movement upon said machineframe, a line lockactuator adjustably mounted in said carriage, a 7

controlling member mounted in such manner as to be movable transverselyto the movementof said carriage', a universal bar, an oscillating stopcarried by said universal bar, a line lock stop adapted to be positioned8v in the path of said osclllating stop, means operatively connectedwith said controlling member and with said line lock stop in such mannerthat said line lock stop is positioned in the path of said oscillatingstop When 8 the carriage has reached a vpre-determined point in itstravel, and means/ttor causing said line lock stop to4 be rembved fromthe path of the oscillating stop.

9. A line lock mechanism or'typeWriti 9 ingmacliines comprising amachine frame,

a carrlage mountedfor reciprocal movement stop carried by said universalbar, a line lock stop adapted to be positioned in the path of said'oscillating stop, and means operatively' connecting said line lock stopwith said controlling member. i 10. In a line lock mechanism for type-Writing machines in combination, a machine frame, -a carriage mounted:for reciprocal movement upon said machine frame, a line lock actuatoradjustably mounted on said carriage, a pivotedycam member operativelymounted .on said actuator, a controlling member pivotally mounted insaid machine frame, in such manner, as to havemovement ina planesubstantially at right angles to the direction of movement of saidreciprocating carriage, a line lockstop, a universal bar,an oscillatingstop carried by 'said' universal bar, means operatively vconnecting saidline lock stop` with said controlling member, and means for actuatingsaid line lock stop in such manner as to cause said controlling` memberto be removed from the path of said cam member.

11. A line lock mechanismtor typewriti ing machines including a mainframe, a carriagc mounted for reciprocal movement upon said main frame,.a .lineI-lock actuator adjustably'mounted in saidc nrriage, a con? ytrolling member inounted'in said machine frame, an oscillating cammember mounted upon/'seid aetutqr and normally in the. path of seid.vconoio ing member, means for disengaging vseid controlling member fromsaid osclllatingmember, means for oscillating said cam member when saidontrolling l member is dis-eng-ged therefrom, an oscilf 1atin'gstopaline1ock stop,'and Ineens connecting-seid eontrolling member and saidline look-stop. 10

In testimony whereof I x my signature' in presence of two witnesses.

` CHARLES SPIRO.

Witnesses:

EDWD. E. JONES,` H; P. ALBEN.

Gopips of fsmayptent may be obzained 4for ve cents each, by addressingthe Commissioner of Patents,

d Washington, 1D.l C.

